using Hcs.ClientApi;
using System;
using System.IO;
using System.Threading;

namespace Hcs.ClientDemo
{
    public class FileStoreDemo
    {
        public static void DemoDownloadFile(HcsClient hcsClient)
        {
            Guid fileGuid = new Guid("e4c3b39f-ad59-11ef-bc8e-0242ac120002");

            var file = hcsClient.FileStoreService.DownloadFile(
                fileGuid, HcsFileStoreContext.homemanagement, CancellationToken.None).Result;
            Console.WriteLine("\nКонтент len=" + file.Length +
                " type=" + file.ContentType + " streamLength=" + file.Stream.Length +
                " hash=" + hcsClient.ComputeGost94Hash(file.Stream));

            using (var s = new FileStream(@"D:\temp\teplo0.pdf", FileMode.CreateNew, FileAccess.Write))
            {
                file.Stream.Seek(0, SeekOrigin.Begin);
                file.Stream.CopyTo(s);
                s.Close();
            }
        }

        public static void DemoUploadFile(HcsClient hcsClient)
        {
            string sourceFileName = @"D:\temp\Проект договора.docx";

            var contentType = HcsFile.GetMimeContentTypeForFileName(sourceFileName);
            if (contentType == null) throw new HcsException("Не найден тип mime для файла");

            Console.WriteLine("Выгружаем файл: " + sourceFileName);
            using (var stream = new FileStream(sourceFileName, FileMode.Open, FileAccess.Read))
            {
                var file = new HcsFile(Path.GetFileName(sourceFileName), contentType, stream);
                var guid = hcsClient.FileStoreService.UploadFile(
                    file, HcsFileStoreContext.homemanagement, CancellationToken.None).Result;
                Console.WriteLine("Выгруженный файл GUID=" + guid);
            }
        }

        public static void DemoGetFileLength(HcsClient hcsClient)
        {
            Guid fileGuid = new Guid("33ddc355-60bd-4537-adf6-fbb31322e16f");
            var length = hcsClient.FileStoreService.GetFileLength(
                HcsFileStoreContext.homemanagement, fileGuid, CancellationToken.None).Result;
            Console.WriteLine($"\nДлина = {length} для файла с GUID " + fileGuid);
        }

        public static void DemoGostHash(HcsClient hcsClient)
        {
            PrintFileHash(hcsClient, @"D:\temp\teplo0.pdf");
        }

        public static void PrintFileHash(HcsClient hcsClient, string fileName)
        {
            using (var stream = new FileStream(fileName, FileMode.Open, FileAccess.Read))
            {
                var hash = hcsClient.ComputeGost94Hash(stream);
                Console.WriteLine($"{fileName} hash=" + hash + " len=" + new FileInfo(fileName).Length);
            }
        }
    }
}